Method and apparatus for controlling power consumption in mobile communication system

Abstract

An embodiment of the present disclosure may provide a power consumption controlling method and apparatus. An embodiment of the present disclosure may provide a method and apparatus for controlling power consumption by a base station, the method including determining empty symbol duration in at least one subframe; and performing a power amplifier (PA) on/off operation based on the determination result. Further, an embodiment of the present disclosure may provide a method and apparatus for controlling power consumption by a base station, the method including generating baseband in-phase/quadrature-phase (IQ) data; determining whether the baseband IQ data includes data which must be transmitted for a predetermined time; and controlling a PA on/off based on the determination result and a transient of the PA.

What is claimed is: 
     
       1. A method performed by a radio unit (RU) for controlling a power amplifier (PA), the method comprising:
 monitoring in-phase/quadrature-phase (IQ) data samples from a data unit (DU); 
 identifying consecutive empty symbols without data to be transmitted in the monitored IQ data samples; and 
 turning off a PA for a duration of the consecutive empty symbols, in case that the duration of the consecutive empty symbols is longer than or equal to a threshold. 
 
     
     
       2. The method of  claim 1 , wherein the threshold is determined based on a transient time from a bias-off to a bias-on level of the PA. 
     
     
       3. The method of  claim 2 , wherein the threshold is longer than the transient time of 5 um. 
     
     
       4. The method of  claim 1 , further comprising:
 turning on the PA, in case that data to be transmitted is monitored in IQ data samples after the duration of the consecutive empty symbols. 
 
     
     
       5. The method of  claim 4 , wherein the PA is turned on based on a transient time from a bias-off to a bias-on level of the PA. 
     
     
       6. A radio unit (RU) in a wireless communication, the RU comprising:
 a power amplifier (PA) that amplifies a wireless signal; and 
 a controller configured to:
 monitor in-phase/quadrature-phase (IQ) data samples from a data unit (DU), 
 identify consecutive empty symbols without data to be transmitted in the monitored IQ data samples, and 
 turn off the PA for a duration of the consecutive empty symbols, in case that the duration of the consecutive empty symbols is longer than or equal to a threshold. 
 
 
     
     
       7. The RU of  claim 6 , wherein the threshold is determined based on a transient time from a bias-off to a bias-on level of the PA. 
     
     
       8. The RU of  claim 7 , wherein the threshold is longer than the transient time of 5 um. 
     
     
       9. The RU of  claim 6 , wherein the controller is further configured to:
 turn on the PA, in case that data to be transmitted is monitored in IQ data samples after the duration of the consecutive empty symbols. 
 
     
     
       10. The RU of  claim 9 , wherein the PA is turned on based on a transient time from a bias-off to a bias-on level of the PA. 
     
     
       11. A method performed by a radio unit (RU) for controlling a power amplifier (PA), the method comprising:
 obtaining, from a data unit (DU), allocation information; 
 identifying consecutive empty symbols without data to be transmitted based on the allocation information; and 
 turning off the PA for a duration of the consecutive empty symbols in case that the duration of the consecutive empty symbols is longer than or equal to a threshold. 
 
     
     
       12. The method of  claim 11 , wherein the allocation information includes pattern information indicating a symbol transmission location associated with a control channel or a reference signal. 
     
     
       13. The method of  claim 12 , wherein the pattern information includes at least one or a combination of:
 a cell reference signal (CRS) symbol pattern mask, 
 a control symbol pattern mask, 
 a primary synchronization signal (PSS) symbol pattern mask, 
 a secondary synchronization signal (SSS) symbol pattern mask, 
 a physical broadcast channel (PBCH) symbol pattern mask, or 
 a positioning reference signal (PRS) symbol pattern mask. 
 
     
     
       14. The method of  claim 11 , further comprising:
 turning on the PA for a duration of at least one symbols with data to be transmitted based on a transient time from a bias-off to a bias-on level of the PA. 
 
     
     
       15. The method of  claim 11 , wherein the threshold is determined based on a transient time from a bias-off to a bias-on level of the PA. 
     
     
       16. A radio unit (RU) in a wireless communication, the RU comprising:
 a power amplifier (PA) that amplifies a wireless signal; and 
 a controller configured to:
 obtain, from a data unit (DU), allocation information, 
 identify consecutive empty symbols without data to be transmitted based on the allocation information, and 
 turn off the PA for a duration of the consecutive empty symbols in case that the duration of the consecutive empty symbols is longer than or equal to a threshold. 
 
 
     
     
       17. The RU of  claim 16 , wherein the allocation information includes pattern information indicating a symbol transmission location associated with a control channel or a reference signal. 
     
     
       18. The RU of  claim 17 , wherein the pattern information includes at least one or a combination of:
 a cell reference signal (CRS) symbol pattern mask, 
 a control symbol pattern mask, 
 a primary synchronization signal (PSS) symbol pattern mask, 
 a secondary synchronization signal (SSS) symbol pattern mask, 
 a physical broadcast channel (PBCH) symbol pattern mask, or 
 a positioning reference signal (PRS) symbol pattern mask. 
 
     
     
       19. The RU of  claim 16 , wherein the controller is further configured to turn on the PA for a duration of at least one symbol with data to be transmitted based on a transient time from a bias-off to a bias-on level of the PA. 
     
     
       20. The RU of  claim 16 , wherein the threshold is determined based on a transient time from a bias-off to a bias-on level of the PA.